Someone had brought in their iPhone and it needed to be wiped for repair. The rep was pushing iCloud under threat of losing their data. It seemed like such a scam. I can only imagine what it feels like to be tech-illiterate and told you must buy a subscription or we'll wipe your family photos.
A 'premium' phone like an iPhone should really have a free backup for at least the data size of the phone. At the very least you should be able to get iCloud free for when your phone is in for repair.